Sewer-pipe machine.



J. H. STEWART.

SEWER PIPE MACHINE. PPLIoA'HoN Hmm 001.10, 1910.

Patented Aug. 15, 1911 3 SHEETS-SHEET l.

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J. H. STEWART.

SEWER PIPE MACHINE.

APPLIOATIQN FILED 00T.10,1010.

Patenta Aug. 15,1911.

Invenir :Tohn H. Stewart- J. 11. STEWART.

SEWER PIPE MACHINE.

ABPLIUATION FILED 00T.10. 1910.

Patented Aug. 15, 1911.

3 SHEETS-SHEET 3.

I mi; mwag/ 1 -ehn, fltewnff 'iii - and similarmaterials.

.Tomi 1li. STEWART, or WATEnLodJmHL SEWER-IIPE MACHINE. l

'fo all whom 'it may concern:

ie it known that. I, Jeux H. STEWART, a I

Specification of Letters Patent.

'citizen of the United States, residing at \\'aterl o, in the countqv ot Blackhawk and 5 State ol Iowa, have invented new and useiul improvements in Sewer-Pipe Machines, ot' \\hieh the followingis a specification.

M v invention relatesI to machines for mak` ing sewer ,piped or drain tile from concrete The object ot' my invention is to provide a 'machine for molding and delivering 'such 4pipe or tile -in a partially cured: condition.

A further object ofmy invention is to provide such a machine arranged to be conven'iently fed from above, as from the seci tiallv set, so that the pipe may be immedi-V ond Hoor of'a building, and to deliver the product at the base ot' the machine.

A further 'object' of my invention to provide such a machine capable of elticiently and economicallyA forming' large 'sizes of 'drain pipe, and delivering the product, with.

the concreto of which it iscomposed parately removed from the molds vand pallets, thus oliviating the use of the molds and pallets during the period of curing, and therehy limiting the number of the same required in the manufacture of such pipe.

1 `igurel shows a central, sectional View of the upper end of my machine. Fig. 2 shows a central sectional view of the lower end of the. same, F ig. 3 shows a. sectional view taken on the line lof Fig. 2, F ig. 4 shows a detail view of the interior steam connection, Fig. 5 shows a detail ofthe divided pine mold, Fig.. shows a detail view of the pipe-pallet, Fig. shows a central sectional view Vof the same, Fig. 8 shows a.`

detail-of the agitator blades for stirring the 'concrete mixture, .Figa 9 shows a detail vlew oione of the jointed brackets orreceivin 'the pipe, and Fig., 10 shows a p lanjview o the same.

Ifhave used the reference numeral 10 tom- Referring to the accompanying drawings,

ine.

, tends'downwardthrough the Ihollow shaft 12, and admits steam to the fermer head 20, said ,former head extending downward through the center of the steam casing 11 and constituting the core of the hereinafter mentioned molds. The cap 21 threaded on the shaft 12 "retains the packing 422 and preventsthe escape of steam from the shaft 12. A pet-cock 23 at the base of the former head forms an adjustableoutlet to regulate the passage of. steam therefrom, and also provides a drain for emptying the water of condensation. The molds 2-1, which form theeylindrieal jackets forthe sections of drain pipe, are designed to lit slidablyv into the steam casing 11. These molds or cylindrical jackets are provided with hinges 25 and a catch 26 to hold them. in closed position. wThevpallets 27 lit similarly into the casing to forni the basesfor the molds and space them apart.. A hopper 28, adapted to receive the concrete mixture, is mounted,l on the frame 15 and opens into vthe steam casing. 11. The pallets 2'( are made in two segments to facilitate introducing them molds 2-1 are introduced into the steam 'casing by opening `them upontheir hinges and the molds 24: and the pallets 27 shouldl be prevented from rotating while inthe steam casing 11'. have provided the pallets 27 with lugs 27 tached blades 31, affixed to the hollow shaft 1L2-ahove the' 4former .head and' revolving with said shaft'1 stir the concretemixture `as plastic in the 4same sense as clay or plaster. The normal initial set does -not take place material hasfbeenl 'placed in `the molds, 4.and -to hasten this process aswell; ast'o eliminate rior of each section of pipe byg'fme'ans of; .the hollow `formerhead 20, which receives. l

" driving shaft 18. 'I he steam pipe Ik19feX-,

'about the hopper 28 into the casing. T he` slidingth'em over the hopper 28, when'they` are closed and locked. It is desirable thatv To accomplish this result, I

for a 4considerable ,time after the dampened' the use'of a large number lof-'molds and pal let-1s, 'lapply heat to the interior and ex-teg Patented Augal, 1911, i Application med Gctober 10, 1910. Serial No. 586,150. u

sis

designed to 'slide in the groove 10".l in saidv l steam casing 11,`and with lugs 27 to en l gage the notches 24 in the moldsV 24. .The

.agitators 2S), comprising arms 30 with at- 95 it enters the molds 24 through the hopperf28. It wlllbe understood thatthe mixture of concrete used in pipe of this/type is not-K les atp i' 4heat partially cures the material which, when leaving the steamcasing 11, is in a conditionA solid enough to allow the removal i. ofthe forms' without destroying the integl 5 rityof the pipe.

To regulate the passage of the pipe'molds 24, which descend' by gravity through the- )ournaled onzthe shafts 38 and are capable of longitudinali adjustment ythereon to -accoininodate diierent sized molds. The vgearwheel 39 on the shaft'38 in mesh with the wornil is driven bythe belt 40, which connects the` pulley wheels 41 on the 'worm 39, and the pulley wheel 42 on the power shaft- 18. Said gear wheel 39 drives the chains in 'i a counter' clock-Wise direction as seen in Fig. 2.- The jointed brackets are `provided at one end with bev eled lugs 43, and also with luos 44 at their joints to prevent the movabe ends from swinging inwardly. The sprins 45 on the 30 opposite sides of said arms yie dingly hold the free ends of the arms in extended position. Thebrackets 34 are spaced to engage the lower sides of the pallets 27 when in the position shown at 4 Fig. 2, thus support ing and permitting;t the' molds to descend at a predetermined speed. The speed of the `arms 34 is accelerated after leaving the position shown at 47 in Fig. 2, and lowers its articular. mold to a position below the folliiwingone, as shown in dotted lines Fig. 2,

designed to engage the lugs 50 of the molds.' and support them as they are freed from the follofiving molds.

Assum-in,f i r the' arts to b e 1n position machine. asA follows: Slush material, such as concrete, deposited in thev hopper 28,' passes into theniold from said hopper, and- -is stirred by the agit'ators '31 to prevent too rapid'setting and to expel the air tl-ieretrom, thus eliminating air hol'es-eoinn'ionly found in this form of-tile. 'Live steam 'is adniits ted to both the former head 20 and the casingv 1'1-,thns heating the' .material both iii- .sde andputas thepipe is tornn'd, while traveling downwardly.

The petci`iclr23 iscinploycd to c i'mit the expulsionot' deafd steam tromit ie 'former head 20 andthe same result is secured in thecasing by reason of the fact that the sprocket wheels 36 and 37. 'Said Wheels are To provide means for receiving the molds-n `shown inthe drawings, the operation'fof my' :for rotating Said former` head.

steam incased in theVj cell between the casing 11 and the' lowermost mold 24 is expelled with said mold. To secure the beneficial results intended', 'it will iroti' be necessary to maintain steam under pressi re in the `casin or even to have said casing air tight. T e brackets 34 in reaching the position at 46, Fig. 2, operate as follows: The outer ends of the brackets 34 in passing over the Wheels 36 travel faster than when descending vertically, and before reaching the position at 46 intercept and pass the partieulan molds which they are intended to support.

.The beveled lugs 43 engage the mold flange 51, and swing the free ends of the bracketsv outwardly aganst the action of the springs 45. After tie brackets -34 have passed bei .low the mold flange, the'springs 45. return the free ends of the brackets to a position for supporting saidirnold. The nioveinen of the molds at the base of the machine is follows: Asthe outer ends of the brackets 34 pass from the position at 47, F ig. 2, their speed is increased thus separating a particular Imold #from ilic- 'lollowing one.

The cart frame 48 thenf tigages the lugs 50 on the mold and support. it-,reedfrom the brackets and' following mold, when said mold may be hauled away an theveart. The product having by this time becoinefsufiieiently hard, the molds' may be stripped from the pipe and again. inserted in the machine. Y f

Having described my invention, what -I claim as new andl desire to, protect by Iletters Batent is:

1. In a drain pipe machine, thecombination of a vertical easing adapted to receive' steam, a plurality of molds centrally ar- -ranged therein' and-'ad pted to' pass theretl1rough,"pallets-` for 'said molds, a former head in the casing, the former-head.

and means for rotating- '2. In a drain pipe machine, the combina` tion of a vertical casing, a pluralityof molds centrally arranged therein and adapted .to

pass therethrough, pallets forsaid molds, a

molds centrallyarranged therein and adaptl ed to pass therethrough, pallets for said molds, a former head adapted -to receive steam, means for regulating the passage of steam through the formerhead, and means 4. in a drain pipe machine, the .combination of a. veitiei'il steanirasing, a plurality of molds vcentrally arranged therein and adapted to passtheretlirough, pallets for said`-niolds, a thinner head in lheeasing adapted to receive steam, 'n ieans for rotatingsaid formcrl'iead, and means for p1'e .Mu u

ventingl the rotationy of said molds and palper leading to tlie'mold's, .a hollow former centrally arranged therein, pallets for the lets.

of a vertical steam casing, a plurality of molds centrally. arranged therein and adapted to ass therethrough, pallets for said molds, a

,hollow former head constituting a core for said molds and adapted to' receive steam, moans for rotatingsaid former head, and means for support-ing the pallets in their passage through the casing.

` 6. In a drain pipe' machine, the combina? tion of a, vertical casing adapted to receive steam, a plura ity of 'molds centi-ally arranged therein, pallets for said molds. a

lformer `head 'in tlie'casin constituting' a core for the molds and atapted to receive steam, means for rotating said former head, means for' receiving and supportingthe molds in their passage through the casing, and means for delivering said molds from -said Supporting and receiving means.

7 In. a drain pipe machine, the combination of a steam casing, divided molds for the casing, divided pallets for the moldsya hophead adapted to receive steam, means for rotating the former head, and means for siip porting and receiving said molds.-

8. In a drain pipe machine, the combination of a steam casing, a plurality of molds molds, a hollow former head constituting a core for the molds'adaptedto 'receive steam, "agitators above the former head, and means for rotating and supporting" t-lie agitators and former head. r

9. In a drain pipe machine, thes combinaltion of -a groove'd casing adapted to receive -steam, a hopper leading into the casing,

molds for the casing, dividedto pass around said hopper, divided pallets for the molds,

lugs on the pallets to engage' the grooved tol :passage through4 the casing,

casing, lugs On'the. pallets. to engage the molds, alhollow-former head adapted to receivesteam, means for supporting"andro` tating the former head, andjointed brackets receive land support the 4molds #in 'their '10.' In a drain pipe machine, the combina-- tion of a casin,'q .ada'pted ;t o receive steam, molds 'for'the casing, pallets for the molds, a', lio'p er leading to the molds, a hollow former 4 .hea

constituting a core for the molds adapted to-receive steam,`agitators above the former head, a shaft. for supporting andV rotating said agitators andA former head, two sets of sprocket wheels slidablymounted on the frame, .one above the other, sprocket chains supported by said sprocket wheels and driven by one of them, hinged brackets p ivoted to the chains and adapted to support the molds, and means for operatingcsaid s rocket wheels. '6L

11. Ihn a drain pipe theicoinbinas i A 5. In a drain pipe machine, the combination tion of a casing adapted to receive steain,

molds for the casing, pallets for the molds, a hopper leading to the molds, a hollow former head adapted to receive steam, a sha-ft f or supporting androtating the agitators and said former head, a frame, two horizontal shafts on the `frame, one aboi'cfthe other, two sprocket-wheels slidably mounted on each shaft, vertically arrangedcliai'ns-- connecting said sprocket wheels, jointed Ibrackets on the chains arranged to engage opposite sides of a mold,ibraces pivotally connected tothe brackets and chains, springs to yieldingly hold the movable ends of `said 1.-

ed Aon each shaft, endless chains carried by said sprocket wheels, jointed brackets correspondingly;arranged onreacliof said chains to engage opposite sides of a mold, braces pivotally Aconnected to the brackets and,

chains, `sl'irings to yieldingly hold-the free 'ends of said brackets in extended positions, and means for rotating said sprocket wheels. 13; In a drain pipe machine, the combination ot a: casing adapted to receive steam,

flanged molds for the casina, pallets fortliei molds, a hollow former-head adapted tonieceive steam, meansor regulating `the, pas

sage Vof steam through said' former-"head,

agitators in the casing above said head', a-

shaft for rotatingaand supporting tl'ie abili-w` tators and former head, a'hopper leading to the casing, a frame, two longitudinal shafts on the frame, one above the `ot her,i=a

gear wheel on one A,of the shafts, a worin-in -inesh with the gea-r wheel 4for drivingl'itgf l sprocket wheels slidahly mounted =on eaciil shaft to accoii'imodate different. sizei'lmolds` chains connectingl said sprocket wheels, )ointed `brackets on the chains to support the molds'viii their passage througli thelcas- 1f ing, lugs on the free ends of the jointed brackets to limit their inward movement,- springs on the stationary ends of said,

brackets to` yieldinglyfhold the free endsfifii straight- `extended positions," and beveled lugs on the free c nds ofthe biackets to more said ends outwardly wliilepassing the mold yflanges. ,i

1 4. In a drain pipe machine, the combination of a casing adapted to receive steani,-' ianged molds within the casing, pallets for the molds, a 4hollow former head adapted to receive steam within the molds, agitato'rs in the casing above-saidV head, a; shaft' attached to the agitatorsland former head, a power shaft geared to said shaft, s; hopper A nation of a casing adaptedto incl-ose plu'- leading to the casing', a frame, two longitudinal s iafts on the frame, one above the other, a gear wheel on one of 'the last mentioned shafts, a worlnin mesh with said gear wheel operatively connected to said power shaft,

sprocketwheels slidably mounted on each shaft, chainsconnecting said sprocket wheels, jointed' brackets on the chains arranged to engage opposite sides of the bases of said molds to overn their passagein the easing, lugs on t 1e free ends of thel joint-y ed brackets to limit their inward movement, springs onthe stationary ends of said brackets to yieldingly hold the free ends in straifrhtextended positions, beveled lugs on the free ends of t e .brackets to move'said ends outwardly while passing the mold flanges, and means for receiving and delivering'mold's from said jointed brackets.

15,.`In a drain pipe machine, thecombination of a vertical casing adapted to re'- ceive steam, a'plurality of flanged molds centrally arranged in said casing and adapted to pass therethrough by gravity, pallets beneath said molds, a' rotatable, vertical shaft centrally arranged in said casing and v molds',a hollow former head adapted to receive steam and attached to said sha-ft,

-mean's for regulating the passage of steam through said former headagitators upon the shaft above said former head, a hopper above the casinga frame, two longitudinal' shafts on' the frame, one above the other, a gear wheelon one of the shafts, a wormin mesh with the gear wheel, moans 'for driving said worm, sprocket wheels. slidably mounted on each of the last mentioned shafts, chains connecting' said sprocket.

wheels, jointed brackets on the chains a1' ranged in pairs to engage the opposite sides of amold and to support the molds 1n their passage 4through the casing, lugs on thc movable' .ends of the jointed bratkets "toA lin-lit their inward movement, springs on the stationary' ends of thesaid brackets to yipldin'gly hold the 'movableends in extended position, beveled lugs'on. the free ends ot the brackets adapted tomove' said ends out` wardly while passing the mold flanges, and means lfor'reoeiv-ing and delivering molds from said jointed brackets.

116, In a sewer pipe machine, thel combirality ol' molds, divided molds for saidV casing, davlded pallets for sald molds, a i'ormer l head within the casing, a hopper leading to the casing, 'means for supporting andI ro tating the' former head and a movable sup-l port for the molds in 'the casin and forreceivin the same as they pass t erefrom.

17.r n a sewer pipe machine, the combination of a-casing, a plurality of molds afr-` ranged 1n vertlcal series 1n said casing and adapted to pass therethrough by gravity,

pallets for said molds, a former head adaptintroducing steam through said shaft into lshaft 'for supportin 'former head, means or introducing 'steam the former head and means for governing the speed of the molds through` the casing and for receiving the same therefrom..

19. In a sewer pipe machine, the comblnation of a casing, molds adapted to pass through the casing by gravit pallets for said molds, a hollow former ead adapted to receive steam, a hollow shaft communieating with, supporting and rotating' the former head, means for preventin the escape of steam between the hollow s l aft fand. said steam pipe andm'eans for; governing the speed of the molds through the casing and' f or receivingA thesame therefrom.

20. In a sewer pipe machine, the c ombination of a casing, molds adapted topass through t-he casing; by. gravity, a former head adaptedy to receive steam, a hollow and rotating the to the former .head through said shaft, means for regulating the flow of steam through `the formerhead and a movable support for -the molds -while 4in the casing,

Madapted to receiye and separate the same as tii'eypass therefrom. Y

lin testimony whereof,l I have signed my name to this specification' in the presence of two ,subscribing witnesses.

, JoHN H. STEWART. Witnesses:

J. C. GATES, E. C. S'mv-Ensorr.

'loo 

